mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-21 17:32:05 +01:00
tests: cover key concepts with more tests (#7516)
More key concept tests - Verify how the time range points are calculated - Vefify that a range query is equivalent to many instant queries Fix docs accordingly. ### Checklist The following checks are **mandatory**: - [x] My change adheres [VictoriaMetrics contributing guidelines](https://docs.victoriametrics.com/contributing/). Signed-off-by: Artem Fetishev <rtm@victoriametrics.com>
This commit is contained in:
Artem Fetishev
GitHub
parent
83fc33af89
commit
58dae07b7a
@ -1,11 +1,12 @@
|
||||
package tests
|
||||
|
||||
import (
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/VictoriaMetrics/VictoriaMetrics/apptest"
|
||||
"github.com/google/go-cmp/cmp"
|
||||
"github.com/google/go-cmp/cmp/cmpopts"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
// Data used in examples in
|
||||
@ -45,6 +46,7 @@ func TestSingleKeyConceptsQuery(t *testing.T) {
|
||||
|
||||
testInstantQuery(t, vmsingle, opts)
|
||||
testRangeQuery(t, vmsingle, opts)
|
||||
testRangeQueryIsEquivalentToManyInstantQueries(t, vmsingle, opts)
|
||||
}
|
||||
|
||||
// TestClusterKeyConceptsQuery verifies cases from https://docs.victoriametrics.com/keyconcepts/#query-data
|
||||
@ -87,13 +89,14 @@ func TestClusterKeyConceptsQuery(t *testing.T) {
|
||||
|
||||
testInstantQuery(t, vmselect, opts)
|
||||
testRangeQuery(t, vmselect, opts)
|
||||
testRangeQueryIsEquivalentToManyInstantQueries(t, vmselect, opts)
|
||||
}
|
||||
|
||||
// vmsingleInstantQuery verifies the statements made in the
|
||||
// `Instant query` section of the VictoriaMetrics documentation. See:
|
||||
// testInstantQuery verifies the statements made in the `Instant query` section
|
||||
// of the VictoriaMetrics documentation. See:
|
||||
// https://docs.victoriametrics.com/keyconcepts/#instant-query
|
||||
func testInstantQuery(t *testing.T, q apptest.PrometheusQuerier, opts apptest.QueryOpts) {
|
||||
// Get the value of the foo_bar time series at 2022-05-10Z08:03:00Z with the
|
||||
// Get the value of the foo_bar time series at 2022-05-10T08:03:00Z with the
|
||||
// step of 5m and timeout 5s. There is no sample at exactly this timestamp.
|
||||
// Therefore, VictoriaMetrics will search for the nearest sample within the
|
||||
// [time-5m..time] interval.
|
||||
@ -104,7 +107,7 @@ func testInstantQuery(t *testing.T, q apptest.PrometheusQuerier, opts apptest.Qu
|
||||
t.Errorf("unexpected response (-want, +got):\n%s", diff)
|
||||
}
|
||||
|
||||
// Get the value of the foo_bar time series at 2022-05-10Z08:18:00Z with the
|
||||
// Get the value of the foo_bar time series at 2022-05-10T08:18:00Z with the
|
||||
// step of 1m and timeout 5s. There is no sample at this timestamp.
|
||||
// Therefore, VictoriaMetrics will search for the nearest sample within the
|
||||
// [time-1m..time] interval. Since the nearest sample is 2m away and the
|
||||
@ -115,40 +118,117 @@ func testInstantQuery(t *testing.T, q apptest.PrometheusQuerier, opts apptest.Qu
|
||||
}
|
||||
}
|
||||
|
||||
// vmsingleRangeQuery verifies the statements made in the
|
||||
// `Range query` section of the VictoriaMetrics documentation. See:
|
||||
// testRangeQuery verifies the statements made in the `Range query` section of
|
||||
// the VictoriaMetrics documentation. See:
|
||||
// https://docs.victoriametrics.com/keyconcepts/#range-query
|
||||
func testRangeQuery(t *testing.T, q apptest.PrometheusQuerier, opts apptest.QueryOpts) {
|
||||
// Get the values of the foo_bar time series for
|
||||
// [2022-05-10Z07:59:00Z..2022-05-10Z08:17:00Z] time interval with the step
|
||||
// of 1m and timeout 5s.
|
||||
got := q.PrometheusAPIV1QueryRange(t, "foo_bar", "2022-05-10T07:59:00.000Z", "2022-05-10T08:17:00.000Z", "1m", opts)
|
||||
want := apptest.NewPrometheusAPIV1QueryResponse(t, `{"data": {"result": [{"metric": {"__name__": "foo_bar"}, "values": []}]}}`)
|
||||
s := make([]*apptest.Sample, 17)
|
||||
// Sample for 2022-05-10T07:59:00Z is missing because the time series has
|
||||
// samples only starting from 8:00.
|
||||
s[0] = apptest.NewSample(t, "2022-05-10T08:00:00Z", 1)
|
||||
s[1] = apptest.NewSample(t, "2022-05-10T08:01:00Z", 2)
|
||||
s[2] = apptest.NewSample(t, "2022-05-10T08:02:00Z", 3)
|
||||
s[3] = apptest.NewSample(t, "2022-05-10T08:03:00Z", 3)
|
||||
s[4] = apptest.NewSample(t, "2022-05-10T08:04:00Z", 5)
|
||||
s[5] = apptest.NewSample(t, "2022-05-10T08:05:00Z", 5)
|
||||
s[6] = apptest.NewSample(t, "2022-05-10T08:06:00Z", 5.5)
|
||||
s[7] = apptest.NewSample(t, "2022-05-10T08:07:00Z", 5.5)
|
||||
s[8] = apptest.NewSample(t, "2022-05-10T08:08:00Z", 4)
|
||||
s[9] = apptest.NewSample(t, "2022-05-10T08:09:00Z", 4)
|
||||
// Sample for 2022-05-10T08:10:00Z is missing because there is no sample
|
||||
// within the [8:10 - 1m .. 8:10] interval.
|
||||
s[10] = apptest.NewSample(t, "2022-05-10T08:11:00Z", 3.5)
|
||||
s[11] = apptest.NewSample(t, "2022-05-10T08:12:00Z", 3.25)
|
||||
s[12] = apptest.NewSample(t, "2022-05-10T08:13:00Z", 3)
|
||||
s[13] = apptest.NewSample(t, "2022-05-10T08:14:00Z", 2)
|
||||
s[14] = apptest.NewSample(t, "2022-05-10T08:15:00Z", 1)
|
||||
s[15] = apptest.NewSample(t, "2022-05-10T08:16:00Z", 4)
|
||||
s[16] = apptest.NewSample(t, "2022-05-10T08:17:00Z", 4)
|
||||
want.Data.Result[0].Samples = s
|
||||
opt := cmpopts.IgnoreFields(apptest.PrometheusAPIV1QueryResponse{}, "Status", "Data.ResultType")
|
||||
if diff := cmp.Diff(want, got, opt); diff != "" {
|
||||
t.Errorf("unexpected response (-want, +got):\n%s", diff)
|
||||
f := func(start, end, step string, wantSamples []*apptest.Sample) {
|
||||
t.Helper()
|
||||
|
||||
got := q.PrometheusAPIV1QueryRange(t, "foo_bar", start, end, step, opts)
|
||||
want := apptest.NewPrometheusAPIV1QueryResponse(t, `{"data": {"result": [{"metric": {"__name__": "foo_bar"}, "values": []}]}}`)
|
||||
want.Data.Result[0].Samples = wantSamples
|
||||
opt := cmpopts.IgnoreFields(apptest.PrometheusAPIV1QueryResponse{}, "Status", "Data.ResultType")
|
||||
if diff := cmp.Diff(want, got, opt); diff != "" {
|
||||
t.Errorf("unexpected response (-want, +got):\n%s", diff)
|
||||
}
|
||||
}
|
||||
|
||||
// Verify the statement that the query result for
|
||||
// [2022-05-10T07:59:00Z..2022-05-10T08:17:00Z] time range and 1m step will
|
||||
// contain 17 points.
|
||||
f("2022-05-10T07:59:00.000Z", "2022-05-10T08:17:00.000Z", "1m", []*apptest.Sample{
|
||||
// Sample for 2022-05-10T07:59:00Z is missing because the time series has
|
||||
// samples only starting from 8:00.
|
||||
apptest.NewSample(t, "2022-05-10T08:00:00Z", 1),
|
||||
apptest.NewSample(t, "2022-05-10T08:01:00Z", 2),
|
||||
apptest.NewSample(t, "2022-05-10T08:02:00Z", 3),
|
||||
apptest.NewSample(t, "2022-05-10T08:03:00Z", 3),
|
||||
apptest.NewSample(t, "2022-05-10T08:04:00Z", 5),
|
||||
apptest.NewSample(t, "2022-05-10T08:05:00Z", 5),
|
||||
apptest.NewSample(t, "2022-05-10T08:06:00Z", 5.5),
|
||||
apptest.NewSample(t, "2022-05-10T08:07:00Z", 5.5),
|
||||
apptest.NewSample(t, "2022-05-10T08:08:00Z", 4),
|
||||
apptest.NewSample(t, "2022-05-10T08:09:00Z", 4),
|
||||
// Sample for 2022-05-10T08:10:00Z is missing because there is no sample
|
||||
// within the [8:10 - 1m .. 8:10] interval.
|
||||
apptest.NewSample(t, "2022-05-10T08:11:00Z", 3.5),
|
||||
apptest.NewSample(t, "2022-05-10T08:12:00Z", 3.25),
|
||||
apptest.NewSample(t, "2022-05-10T08:13:00Z", 3),
|
||||
apptest.NewSample(t, "2022-05-10T08:14:00Z", 2),
|
||||
apptest.NewSample(t, "2022-05-10T08:15:00Z", 1),
|
||||
apptest.NewSample(t, "2022-05-10T08:16:00Z", 4),
|
||||
apptest.NewSample(t, "2022-05-10T08:17:00Z", 4),
|
||||
})
|
||||
|
||||
// Verify the statement that a query is executed at start, start+step,
|
||||
// start+2*step, …, step+N*step timestamps, where N is the whole number
|
||||
// of steps that fit between start and end.
|
||||
f("2022-05-10T08:00:01.000Z", "2022-05-10T08:02:00.000Z", "1m", []*apptest.Sample{
|
||||
apptest.NewSample(t, "2022-05-10T08:00:01Z", 1),
|
||||
apptest.NewSample(t, "2022-05-10T08:01:01Z", 2),
|
||||
})
|
||||
|
||||
// Verify the statement that a query is executed at start, start+step,
|
||||
// start+2*step, …, end timestamps, when end = start + N*step.
|
||||
f("2022-05-10T08:00:00.000Z", "2022-05-10T08:02:00.000Z", "1m", []*apptest.Sample{
|
||||
apptest.NewSample(t, "2022-05-10T08:00:00Z", 1),
|
||||
apptest.NewSample(t, "2022-05-10T08:01:00Z", 2),
|
||||
apptest.NewSample(t, "2022-05-10T08:02:00Z", 3),
|
||||
})
|
||||
|
||||
// If the step isn’t set, then it defaults to 5m (5 minutes).
|
||||
f("2022-05-10T07:59:00.000Z", "2022-05-10T08:17:00.000Z", "", []*apptest.Sample{
|
||||
// Sample for 2022-05-10T07:59:00Z is missing because the time series has
|
||||
// samples only starting from 8:00.
|
||||
apptest.NewSample(t, "2022-05-10T08:04:00Z", 5),
|
||||
apptest.NewSample(t, "2022-05-10T08:09:00Z", 4),
|
||||
apptest.NewSample(t, "2022-05-10T08:14:00Z", 2),
|
||||
})
|
||||
}
|
||||
|
||||
// testRangeQueryIsEquivalentToManyInstantQueries verifies the statement made in
|
||||
// the `Range query` section of the VictoriaMetrics documentation that a range
|
||||
// query is actually an instant query executed 1 + (start-end)/step times on the
|
||||
// time range from start to end. See:
|
||||
// https://docs.victoriametrics.com/keyconcepts/#range-query
|
||||
func testRangeQueryIsEquivalentToManyInstantQueries(t *testing.T, q apptest.PrometheusQuerier, opts apptest.QueryOpts) {
|
||||
f := func(timestamp string, want *apptest.Sample) {
|
||||
t.Helper()
|
||||
|
||||
gotInstant := q.PrometheusAPIV1Query(t, "foo_bar", timestamp, "1m", opts)
|
||||
if want == nil {
|
||||
if got, want := len(gotInstant.Data.Result), 0; got != want {
|
||||
t.Errorf("unexpected instant result size: got %d, want %d", got, want)
|
||||
}
|
||||
} else {
|
||||
got := gotInstant.Data.Result[0].Sample
|
||||
if diff := cmp.Diff(want, got); diff != "" {
|
||||
t.Errorf("unexpected instant sample (-want, +got):\n%s", diff)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
rangeRes := q.PrometheusAPIV1QueryRange(t, "foo_bar", "2022-05-10T07:59:00.000Z", "2022-05-10T08:17:00.000Z", "1m", opts)
|
||||
rangeSamples := rangeRes.Data.Result[0].Samples
|
||||
|
||||
f("2022-05-10T07:59:00.000Z", nil)
|
||||
f("2022-05-10T08:00:00.000Z", rangeSamples[0])
|
||||
f("2022-05-10T08:01:00.000Z", rangeSamples[1])
|
||||
f("2022-05-10T08:02:00.000Z", rangeSamples[2])
|
||||
f("2022-05-10T08:03:00.000Z", rangeSamples[3])
|
||||
f("2022-05-10T08:04:00.000Z", rangeSamples[4])
|
||||
f("2022-05-10T08:05:00.000Z", rangeSamples[5])
|
||||
f("2022-05-10T08:06:00.000Z", rangeSamples[6])
|
||||
f("2022-05-10T08:07:00.000Z", rangeSamples[7])
|
||||
f("2022-05-10T08:08:00.000Z", rangeSamples[8])
|
||||
f("2022-05-10T08:09:00.000Z", rangeSamples[9])
|
||||
f("2022-05-10T08:10:00.000Z", nil)
|
||||
f("2022-05-10T08:11:00.000Z", rangeSamples[10])
|
||||
f("2022-05-10T08:12:00.000Z", rangeSamples[11])
|
||||
f("2022-05-10T08:13:00.000Z", rangeSamples[12])
|
||||
f("2022-05-10T08:14:00.000Z", rangeSamples[13])
|
||||
f("2022-05-10T08:15:00.000Z", rangeSamples[14])
|
||||
f("2022-05-10T08:16:00.000Z", rangeSamples[15])
|
||||
f("2022-05-10T08:17:00.000Z", rangeSamples[16])
|
||||
}
|
||||
|
||||
@ -581,7 +581,9 @@ Params:
|
||||
If the `end` isn't set, then the `end` is automatically set to the current time.
|
||||
* `step` - the [interval](https://prometheus.io/docs/prometheus/latest/querying/basics/#time-durations)
|
||||
between data points, which must be returned from the range query.
|
||||
The `query` is executed at `start`, `start+step`, `start+2*step`, ..., `end` timestamps.
|
||||
The `query` is executed at `start`, `start+step`, `start+2*step`, ..., `start+N*step` timestamps,
|
||||
where `N` is the whole number of steps that fit between `start` and `end`.
|
||||
`end` is included only when it equals to `start+N*step`.
|
||||
If the `step` isn't set, then it default to `5m` (5 minutes).
|
||||
* `timeout` - optional query timeout. For example, `timeout=5s`. Query is canceled when the timeout is reached.
|
||||
By default the timeout is set to the value of `-search.maxQueryDuration` command-line flag passed to single-node VictoriaMetrics
|
||||
@ -589,8 +591,8 @@ Params:
|
||||
|
||||
The result of Range query is a list of [time series](https://docs.victoriametrics.com/keyconcepts/#time-series)
|
||||
matching the filter in `query` expression. Each returned series contains `(timestamp, value)` results for the `query` executed
|
||||
at `start`, `start+step`, `start+2*step`, ..., `end` timestamps. In other words, Range query is an [Instant query](#instant-query)
|
||||
executed independently at `start`, `start+step`, ..., `end` timestamps.
|
||||
at `start`, `start+step`, `start+2*step`, ..., `start+N*step` timestamps. In other words, Range query is an [Instant query](#instant-query)
|
||||
executed independently at `start`, `start+step`, ..., `start+N*step` timestamps.
|
||||
|
||||
For example, to get the values of `foo_bar` during the time range from `2022-05-10T07:59:00Z` to `2022-05-10T08:17:00Z`,
|
||||
we need to issue a range query:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user